False
From OpenEUO
Description
false is a lua keyword and valid value of type 'boolean'. While false is the opposite of true, nil is also considered false unless explicitly tested for.
local a,b,c = true,false,nil print(a == b) print(a ~= b) print(a ~= c) print(b ~= c) print(c ~= nil)
--> 'false' --> 'true' --> 'true' --> 'true' --> 'false'